Cooking machine



March 16, 1937.

a. H. BUSHWAY COOKING MACHINE Filed July 8, 1936 5 Shets-Sheet 1 [rive aH n grz March 16, 1937, G. H. BUSHWAY 2,074,044

COOKING MACHINE Filed July 8, 1956 s Shets-Sheet 2 J71ven?or,

March 16, 1937. BUSHWAY' 2,074,044

COOKING MACHINE Filed Jul 8, 1936 s Sheets-Sheet s Patented Mar. 16,1937 PATENT OFFICE COOKING MACHINE George H. Bushway, Hampton, H.,assignor to Electricooker, Inc., Newburyport, Mass, a corporation ofMassachusetts Application July 8, 1936, Serial No. 89,517

19 Claims.

This invention primarily relates to machines for cooking or fryingvarious materials, usually in granular form, such as nut meats, potatochips, etc., in oil, or similar cooking liquid, and which are adapted toperform the cooking operation automatically and continuously on materialsupplied thereto from a hopper, or the like.

Prior to my invention various machines of this type have been producedwhich are to an extent automatic, in that they discharge the cookedmaterial either at regular intervals or continuously.

While the cooking operation may be successfully timed in many instances,difliculty is frequently' encountered in securing uniform results underall conditions, and particularly in performing the cooking operationautomatically on material such as nut meats, which may be 30 suppliedfrom a hopper, without the necessity of having a person more or lessconstantly in attendance.

The primary object of my invention is to provide an automaticallyoperating cooking ma- 35 chine of the type above referred to, in whichthe operation will be entirely automatic, and the results secured willbe uniform, so that a hopper may be filled with material to be cookedand the machine set in operation and will continue 30 to operate for anindefinite period without further attention, and will automaticallydischarge material which has been uniformly cooked, re gardless ofwhether the quantity supplied to the machine at each cycle of operationis equal to the full capacity of the machine, or only partly so.

Another object of my invention is to simplify the construction ofmachines of this type, so that various mechanical difficulties, to whichI 40 prior machines have been subject, will be eliminated, and themachines may be constructed at a reduced cost.

In operating machines of this type, I have discovered that if thematerial to be cooked, such as nut meats, is dumped into cooking oilwhich has been heated to a certain temperature, which temperature willthen' be necessarily lowered by heat exchange between the material andoil, that, when the temperature" of the oil 50 has been raised again tothe maximum point,

the cooking operation will be finished.

In accomplishing the primary object of my invention, I provide automaticmeans for supplying material to be cooked and for discharging 5 the samewhen cooked, which is automatically (on. 53. I

controlled by a thermostat arranged in position to be influenced by theheat from the oil, to which heat is more or less constantly supplied,

so that when the temperature of the oil is raised to a predeterminedpoint, a suitable quantity of 5 the material to be cooked will bedischarged into the oil, with the result that the temperature of the oilwill be lowered, then, as the heating of the oil will be continued, thetemperature of the oil will be gradually raised to the predeter- 10mined point again, and then, as the cooking operation will be finished,the cooked material will be automatically removed from the oil and afresh charge of the material will be delivered to the oil, the abovedescribed cycle of opera- 15 tions being repeated indefinitely, or solong as the hopper, from which the material is delivered, is suppliedtherewith.

I'n carrying out the above described operations, I provide electricalmeans for both heating the oil and for operating the material supplyingand dumping means, so that the machine may be successfully operated bymerely making a connection with an electrical source.

For a more complete disclosure of the means 5 which I preferably employin accomplishing the objects of my invention above referred to,reference is now made to the following specification, in connection withthe accompanying drawings, in which:

Fig. 1 is a front elevation of a machine containing a preferredembodiment of my invention.

Fig. 2 is a sectional view thereof at line 2-2 of Fig. 1.

Fig. 3 is a detail sectional view of the thermostatic means which isemployed.

4 Figs. 4, 5, 6 and 8 are views in side elevation of a portion of theoperating mechanism at one side of the machine and showing the parts indifferent positions.

Fig. 7 is a view in side elevation of the opposite side of the machine.

Fig. 9 is a sectional view at line 9-9 of Fig. 4.

Figs. 10 11, 12 and 13 are diagrams of the electrical connections.

As shown in the drawings, the base I2 has two uprights l3, l4 thereon,each upright having a bracket arm l5, l6 extending horizontally from thefront edge thereof to provide a support for a container l8 havingvertical sides which rest directly on the bracket arms and a raisedbottom 19, against the under side of which an electrical heating element20 is clamped by a plate 2|, which is held in position by means of 5screws and nuts. A bracket 22 is also similarly secured by the same nutson said screws and carries the terminals 23-23 of the element 20, towhich the wires of a cord 24 are connected.

A tube 25 extends horizontally through one side of the container closeto, and above its bottom. and terminates against its opposite side, anda liquid tight connection, as by means of solder, is provided betweeneach end of the tube and the adjacent walls, as shown in Fig. 3. Athermostat is inserted through the open outer end of tube 25, whichconsists of an expansion tube 26, which is closely fitted'to tube 25,and a rod.28 which is disposed therein, the inner end of rod 28 beingconnected by a "pivot 29' to the inner end of tube 26, and the outer endof said rod being connected by a pivot38 to one arm of a lever 32, whichis mounted on a pivot 33, fixed in a support 34 attached to the outerend of tube 25. A switch mechanism is enclosed in a casing 35, which isfixed on the end of tube 25, said mechanism comprising an insulatingbase member 36, which is attached to lever 32 and an insulating covermember 31 which is connected to said base member. The base member has afixed contact member 38 and a spring contact member 39, to whichterminals 40, 4| are respectively connected, and a pin 42 isreciprocally mounted in cover member 31, the outer end of whichprotrudes therethru, and the inner end of which is arranged inengagement with member 39. An adjustable abutment 44, having a handle 45on its outer end, is extended through and threaded in casing 35, theinner end of said abutment being arranged to be engaged by pin 42, sothat when the tube 26 expands it will cause the rod 28 to be pulled tothe left in Fig. 3, causing lever 32 to swing on its pivot to the dottedline position of Fig. 3, thereby forcing pin 42 against abutment 44, sothat said pin acts to force contact member 39 out of contact with member38, thereby breaking the circuit between terminals 40, 4|, to whichwires 46, 41 are respectively connected.

The container I8 is open at its top and a reticulated basket 48, havingan imperforate rim piece 49 on its top, is mounted on a pivot 58, thearrangement being such that said basket may swing on its pivot from thenormal or cooking position of Figs. 2 and 7 to a dumping positionindicated by the dotted line position of Fig. 7. The means for movingthe basket between these positionscomprise a link 52, which is connectedat one end to one side of the basket by a pivot-53 located beneath andat one side of pivot 50, so that when the link is drawn upward thebasket will be swung to its dumping position.

A vertically disposed conduit 54, to the upper end of which a magazineor hopper 55 opens, is mounted in a casing 56 on the upper ends of thestandards I3, l4, and a shaft 58 is journaled at each end in the sidesof said conduit and has a worm gear 59 secured on one end thereof, saidgear being driven by a shaft 6|, which is in turn driven through anotherworm gear from the shaft of an electric motor 60. An arm 62 is securedon shaft 58 and the end thereof is pivotally engaged with the link 52 inan elongated slot 5| therein, the arrangement being such that, when themotor is driven, arm 62 will be swung upward, causing the pivot in theend thereof to engage the link at the upper end of its slot, therebylifting the basket until it swings to the dumping position of Fig. 7. Itwill'be noted that, in the uppermost position of the arm and link, thepivot 68 is still at one side of the pivot 58 of the basket, so that thelink is free to move downward, as the arm 62 swings downward. As a looseconnection is necessary between arm 62 and link 52, a spring 63 isattached to the link and to a standard l3, which is placed under tensionby the lifting movement, so that the spring acts to tilt back the basketuntil its center of gravity passes over its pivot 58, and it is free toswing back to its initial position by its gravity.

The conduit 54 is provided with an entrance valve 65, which is mountedat its middle on a shaft 66, so that 'when the latter is oscillatedthrough 90 the valve will be moved from its horizontal to its verticalposition, permitting a supply of material in the hopper to pass into theconduit. A spring 61 is attached to valve 65 at one side of its shaftand acts to return the valve to its closed position. A right angularlyshaped arm 68 extends from the end of shaft 66, and a .cam arm I0,having a projecting pin 12 therein, is mounted on the opposite end ofshaft 58 from arm 62, and is so arranged that, when the shaft 58 isdriven to lift the basket, pin 12 will engage the radially extendingportion of arm 68 and swing the same to the position of Fig. 5, in whichposition the valve 65 will be fully open, then, on further movement ofshaft 58, pin 12 will become disengaged from arm 68, permitting spring61 to return the valve to its closed position of Figs. 4 and 6, in whichposition the right angularly extending portion 69 of arm 68 engages aboss in the side of the conduit in which the shaft 58 is journaled, andacts as a stop to prevent movement of the valve beyond its closedposition.

The lower end of the conduit is closed by a pair of flap valves 14, 15which are respectively mounted on pivot shafts 16, 11 at opposite sidesof the conduit, said valves being normally held in closed position bysprings 18, 19 respectively, in which position both valves are held in adownwardly inclined position, with the end portion of valve I4overlapping the end of valve 15 at the middle of the conduit. The pivotshaft '11 has a cam arm secured thereto, and the shaft 16 has a cam arm82 which is arranged to extend beneath the arm 80. As thus arranged,after the pin 72 becomes disengaged from arm 68, so that valve 65becomes closed, the pin then engages the straight edge portion 8| of arm80 and causes the arm to swing downward and open valve 15 and at thesame time arm 88, on being swung downward, engages arm 82, causing thevalve 15 to be opened also. This movement does not occur until thebasket has been returned or nearly returned to normal position, so that,by the opening of the valve 65, the conduit becomes filled with ameasured quantity of material from, the hopper, which is subsequentlydelivered to the basket. Continued movement of the shaft 58 carries thepin 12 out of contact with the arm portion 8i, so that the springs I8,

19 then close the valves 14, 15.

A two way switch 84 is employed in the motor circuit, a form which maybe employed being shown in Fig. 4. vAs shown, said switch has a terminal85 to which a spring contact arm 86 is connected and is arranged forengagement with either a terminal 81 or a terminal 88. An operatinglevel 89 is pivoted at 90 and is normally pressed downward by acompression spring 9|, in which position lever 89 holds arm 86 incontact with terminal 31, and, when lever 39 is swung upward to the fullline position of Fig 8, arm 86 will swing into contact with terminal 83.The arrangement is such that when pin 12 becomes disengaged from arm 89,the end portion of arm 19 engages the end of lever 39, and moves it tothe full line position of Fig. 8.

The arrangement of the circuits may be best understood on reference tothe diagrams of Figs. 10 to 13, of which Fig. 10 indicates the normalcondition in which the heater is operating to heat the cookingliquidwith which the container l8 will be supplied.

As indicated, the main line wire 92 is connected by a wire 94 to one ofthe heater terminals 23,'and the other main line wire 93 is connected bywire 95 to the spring contact member 39, and the member 33 is connectedby wire It to the other heater terminal 23', completing the circuitthrough the heater.

The motor 60 is operated by two diflerent circuits at difierent timesduring the cycle in which the cooked material is discharged, when thetemperature oi the cooking liquid is raised to a predetermined point,and a fresh supply of the material to be cooked is delivered to thebasket 48, and the parts are restored to the initial or startingposition.

The terminals of the 1st motor circuit are indicated at A and B,terminal A being located at the thermostat at switch terminal 38 andterminal B at the switch terminal 39. A wire 96 leads from the terminal.B .to the two way switch terminal 81 and a wire 98 leads from the switcharm 86 to one of the motor terminals, and a wire 99 leads from theterminal A to the other motor terminal. As thus arranged, when thethermostat switch is closed, and terminals 38 and 39 are therefore incontact, the heater will be operated and the motor circuit A, B

will be short-circuited by the thermostat switch,

so that no current will pass thru the motor. When the temperature of thecooking liquid is raised to the predetermined point, for example,

350 F., the thermostat opens its switch, so that the motor circuit A, B,is placed in series with the heatercircuit, as shown in Fig. 11, and themotor will be operated. The operation of dumping the cooked materialfrom the basket and the delivery of a fresh supply thereto w ll then beperformed, the parts reaching the position of Fig. 6. The arm 10 thenengages the switch arm 89, and moves it from the dotted line to the fullline position of Fig. 8, causing the switch member 86 to move intocontact with the switch terminal 38, so that the parts are in theposition of Fig. 12, in which position both the motor circuit A, B, andthe heater circuit will be broken, so that the entire apparatus becomesinactive.

charged into the cooking liquid, and as the heater is shut off, theliquid will be cooled by heat exchange, causing the thermostat tocontract until its switch is again closed and its members 38, 39 aremoved into contact, so that the parts will then be in the position ofFig. 13, in which position the motor circuit A, C, and the heatercircuit will be in parallel and both will be operated. The motor thenstarts moving the arm 10 out of contact with the switch arm 89, so thatthe spring 9| will be free to restore the arm 89 to the initial positionof Fig.' 10, thus breaking the motor circuit A, C, so that the motorcomes to rest. All parts are thus motor are inactive.

restored to the initial position, so that the liquid will again beraised to the maximum temperature, and the operation above describedwill be repeated.

As indicated in the diagrams, an electric lamp I0, is arrangedin-parallel with the motor circuit, so that when the motor operates thelamp will be lighted." This arrangement is merely preferable, and in noway essential to my" invention.

The provision of the two-way switch is necessary to prevent movement ofthe parts beyond the predetermined cycle and to permit restoration ofall parts to the initial position indicated in Fig.'l0, at the beginningof each cooking operation. It will be apparent that when the freshsupply of material is discharged into the liquid, the temperature of theliquid will). be reduced, but a period of time is necessary to permitthe cooling action to be transmitted to the thermostat and for the tube26 tocontract sufiiciently to swing lever 32 back to an extent whichwill permit the switch members- 38, 39 to come into contact again andthus restore the current through the heater, so that heating will beresumed. The length of this period varies under different conditionsfrom approximately this cooling period, the parts will remain in theposition of Fig. 12, and the full line position of Fig. 8, in whichposition both the heater and Consequently, even if the quantity ofmaterial supplied is very smallflso that atmospheric temperature isprincipally effective in cooling the liquid, .the material. will not belikely to be overcooked, as the heater will be inactive until the heatercircuit is'restored, and, while the length of the cooking period afterthe heater circuit has been restored, will be less with a small quantitythan with the full quantity, the results will be'the same, so thatunderv all conditions the material will be cooked uniformly.

' It will be apparent that fordiiferent materials a different maximumtemperature of the liquid may be necessary, and this may be varied bymerely adjusting the position of the abutment .44. Forcooking peanuts,or other nut meats,

the maximum temperature which is most desirable has been found to beapproximately 350 F.

If the supply in the hopper becomes exhausted and the current is notshutoff, the machine will continue to operate at intervals as abovedescribed, the length of time in which all parts will be inactive whilethe liquid is cooling by the surrounding air being merely increased.

It will be apparent that the operation is entirely automatic and that noattention is required by an operator beyond the necessity of supplyingmaterial tothe hopper and removing it after it has been discharged.

I claim:

1. In a cooking machine, a container for cooking liquid, heating meanstherefor, a normally stationary electric motor, means arranged to beactuated by said motor to remove cooked material from the liquid, and athermostat arranged to be influenced by the temperature of the liquid inthe container and to set said motor in operation to remove the materialwhenthe temperature of the liquid is raised to a predetermined point.

2. In a. cooking machine, a container for cooking liquid, heating meanstherefor, a normally stationary electric motor, means arranged to beactuated by said motor to remove cooked material from the liquid, and todeliver a fresh supply of material thereto, a thermostat arranged to beinfluenced by the temperature of the liquid in the container and to setsaid motor in operation when the temperature of the liquid is raised toa predetermined point, and means to discontinue the operation of themotor when the delivery operation has been finished.

3. In a cooking machine, a container for cooking liquid, heating meanstherefor, an electric motor, operating means arranged to be actuatedthereby to remove cooked material from the container and deliver a freshsupply thereto, a thermostat arranged to be influenced by thetemperature of the liquid in said container, and means operated therebyto set said motor in operation when the temperature of the liquid hasbeen raised to a predetermined point, and means to discontinue theoperation of said motor when its delivering operation has been finishedand to return said operating means to its initial position when thetemperature of the liquid has been lowered below said point.

4. In a cooking machine, a container for cooking liquid, an electricheater for said container and an electric motor, operating meansarranged to be actuated by said motor to remove cooked material fromsaid container and deliver a fresh supply thereto, a thermostat arrangedto be influenced by the temperature of the liquid in the container andmeans operated thereby to set said motor in operation when thetemperature of the liquid has been raised to a predetermined point, andmeans to break the motor and heater circuits when the deliverinoperation has been finished, and to return said operating means to itsinitial position and restore the heater circuit when the temperature ofthe liquid has been lowered.

5. In a cooking machine, a' container for cooking liquid, heating meanstherefor, a. reticulated basket for containing the material to be cookedand normally disposed within said container, an electrical motor, meansoperated by 'said motor for moving said basket from the container todump the contents thereof and for returning it to the container and fordelivering a fresh supply of material to be cooked to said basket, andthermostatic means arranged to be influenced by the temperature of theliquid in the container to control the electrical supply to said motorand to cause operation thereof when the temperature of the liquid israised to a predetermined point.

6. In a cooking machine, a container for cooking liquid, heating meanstherefor, a reticulated basket normally disposed within the container, anormally inactive electric motor, means arranged to be actuated by saidmotoraccording to a predetermined cycle to lift the basket from thecontainer and discharge its contents therefrom and then to return thebasket to the container and discharge a quantity of material to becooked to the basket, a thermostat arranged to be influenced by thetemperature of the liquid in the container, an electric circuit leadingto said motor, and controlling means for said circuit, arranged to beoperated by said thermostat to actuate said motor to perform said cycle,when the temperature of the liquid is raised to a predetermined pointand to discontinue actuation thereof after a fresh supply of materialhas been delivered to the basket.

acres 7. In a cooking machine, a container for cocking liquid, heatingmeans therefor, a reticulated basket normally disposed within saidcontainer, a magazine for the material to be cooked having a dischargeconduit arranged to deliver the material from the magazine to the basketwhen in position in the container, valvular devices in said conduitarranged to be alternately operated to deliver a measured quantity ofthe material to said basket, an electric motor, means arranged to beactuated by said motor according to a predetermined cycle when set inoperation, successively to lift the basket from the container anddischarge its contents at one side thereof, return the basket to thecontainer and operate said valvular devices to deliver a fresh supply ofmaterial to the basket, a thermostat arranged to be influenced by thetemperature of'the liquid in the container to control the electricalsupply to said motor and set the same in operation to perform said cyclewhen the temperature of the liquid has been raised to a predeterminedpoint and to discontinue said operation when said cycle has beencompleted.

8. In a cooking machine, a container for cocking liquid, heating meanstherefor, an electric motor having two electrical circuits connectedthereto, operating means arranged to be actuated by said motor todischarge cooked material from the container and deliver a fresh supplyof material to be cooked thereto, and to return the same to an initialposition, a thermostat, electrical controlling means arranged to beoperated by said thermostat when the temperature of the liquid has beenraised to a predetermined point, to set said motor in operation bycurrent supplied to one of said circuits, to perform said dischargingand supplying operations, means, arranged to be operated by said motorwhen it has performed said operations, to break said motor circuitbefore said operating means has been returned to initial position, meansarranged to actuate said motor by current supplied to the other of saidcircuits when the temperature of the liquid has been lowered to apredetermined degree, to restore said operating means to initialposition, and means to break said last named circuit when said operatingmeans has been restored to initial position.

9. In a cooking machine, a container for cooking liquid, an electricalheater for said container, a thermostat arranged to break the heatercircuit when the temperature of the liquid in the container is raised toa predetermined point, an electric motor having two electrical circuitsconnected thereto, operating means arranged to be actuated by said motorto discharge cooked material from said container and to deliver a freshsupply thereto and then to be returned to an initial position,controlling means for said motor circuits arranged to set said motor inoperation by current supplied to one of said circuits when said heatercircuit is broken to actuate said operating means to discharge thematerial from the container and deliver a fresh supply thereto, means tobreak the circuit before said operating means have been returned toinitial position, means to close the other motor circuit when the heatercircuit has been restored by the lowering of the temperature of theliquid and thereby return said operating means to initial position, andmeans to break the last named circuit when said operating means has beenreturned to said position.

10. In a cooking machine, a container for cooking liquid, an electricheater for heating liquid therein, a thermostat arranged to break theheater circuit when the temperature of the liquid has been raised to apredetermined point, an electric motor having a shunt connection withsaid heater circuit, so arranged that when the heater circuit is closedthe motor will be inactive and will be set in operation when said heatercircuit is broken by the thermostat, op-

crating means arranged to be actuated by the motor when set in operationto remove cooked material from the liquid and to deliver a fresh supplyof material thereto according to a predetermined cycle, and means todiscontinue the operation of said mQtor when said cycle has beencompleted.

11. In a cooking machine, a container for cooking liquid, anelectricheater for heating the liquid therein, a thermostat arranged to breakthe heater circuit when the temperature of the liquid has been raised toa predetermined point, anelectric motor having a primary and a secondarycircuit connected thereto, so arranged that when the heater circuit isclosed the motor will be inactive and will be set in operation throughsaid primary circuit when said heater circuit is broken by thethermostat operating means, means arranged to be actuated by the motorwhen set in operation, to remove cooked material from the liquid and todeliver a fresh supply of material thereto, according to a predeterminedcycle, a two-wayswitch in said motor circuits arranged to be operated bythe motor when the fresh supply of material has been delivered, to moveit from its normal position to break said primary circuit and close saidsecondary circuit, so that when the heater circuit is restored by thethermostat, on the lowering of the temperature of the liquid, the motorwill be started and said cycle operation will be finished, and meanscontrolled by the motor as the motor actuated means reaches the end ofits cycle, to restore the switch to its normal position.

12. In a cooking machine, a container for cooking liquid, an electricheater therefor, a thermostat having a one way switch arranged to breakthe heatercircuit when the temperature of the liquid in the container israised to a predetermined point, an electric motor having two electricalcircuits connected thereto, one of which has its terminals at oppositesides of said one way switch and the other of which is arranged inparallel with said heater circuit,'a two-way switch normally held inposition to close said first named circuit, so that when the one wayswitch is opened, said motor will be operated, operating means arrangedto be actuated by said motor to discharge material from said containerand to deliver a fresh supply of material thereto and to return saidoperating means to initial position, means arranged to be actuated bysaid operating means to move said two-way switch to place the othermotor circuit in parallel with the heater circuit before said operatingmeans are returned to initial position, whereby the motor will stop andits operation will not be resumed until the heater circuit has beenclosed by the thermostat switch upon the lowering of the temperature ofthe liquid, and means to move said two-way switch back to its initialposition when the operating means has been returned to its intialposition. 13. In a cooking machine, a container for cooking liquid,heating means therefor, a reticulatedbasket pivotally mounted formovement from a cooking position within container to a dumping positionat one side thereof, a conduit arranged to discharge material into thebasket when in cooking position, a hopper leading to the entrance end ofsaid conduit, a pair of valves arranged one above the other in saidconduit, a shaft extending transversely of said conduit, a motor fordriving said shaft, arms on said shaft arranged, on one completerevolution thereof, to lift said basket to dumping position and toreturn it to cooking position, to open and close the uppermost valve andthen open and close the lowermost valve in time to deliver material tothe basket after its contents have been dumped, and automatic electricalcontrolling means for the motor arranged to set the motor in operationwhen the temperature of the cooking liquid is raised to a predeterminedpoint, to cause a complete rotation of said shaft and to discontinue theoperation thereof when said rotation has been completed.

14. In a cooking machine, an open top container for cooking liquid, areticulated basket pivotally mounted at one side to swing about ahorizontal axis located above the top edge of a side wall of thecontainer, to permit the basket to swing between a cooking position inwhich its bottom portion may be submerged in the liquid will be swungupward from its initial to its dumping position and on furtherrevolution will be returned to cooking position, and means forcontrolling the operation of said motor to make a single revolution ofsaid shaft at the end of each cooking operation.

15. In a cooking machine, a container for cooking liquid, heating meanstherefor, an electric motor having a primary and a secondary electriccircuit connected thereto, a rotary shaft arranged to be actuated bysaid motor to discharge cooked material from the container and todeliver a fresh supply of material thereto, a thermostat, electricalcontrolling means arranged to be operated by said thermostat when thetemperature of the liquid in the container has been raised to apredetermined point to set -said motor in operation by current suppliedto said primary circuit, to perform said discharging and supplyingoperations, a two-way switch arranged to make or break both of saidmotor circuits in the opposite positions thereof and having an operatingarm, an arm on said shaft arranged to move said operating arm to breaksaid primary circuit when said supplying operation has been completedand before said shaft has made a completed rotation and to close saidsecondary circuit at said two way switch, whereby the motor will bestopped until said secondary circuit is reestablished by the controllingmeans of the thermostat when, the temperature of the liquid has beenlowered, and means to move said switch arm back to its original positionwhen the motor has completed the rotation of said shaft.

16. In a cooking machine, a. container for cooking liquid, anelectricheater for said container, an electric motor, separate circuitsfor said heater and motor, operating means arranged to be actuated bysaid motor when set in operation to discharge cooked material from thecontainer and deliver a fresh supply thereto, a thermostat arranged tobe influenced by the temperature of the liquid in the container,controlling means arranged to be operated by said thermostat to set saidmotor in operation when the temperature of the liquid is raised to apredetermined point, means to break said motor and heater circuits whenthe fresh supph' of material has been delivered and means controlled bysaid thermostat to restore said heater circuit when the temperature ofthe liquid has been lowered,

17. In a cooking machine, a container for cooking liquid, a heatertherefor, a thermostat arranged to be influenced by the temperature ofthe liquid therein, an electric switch arranged to be moved from itsnormal position by said thermostat when the temperature of the: liquidis raised to a predetermined point and to be restored to normal positionwhen the temperature of the liquid is reduced to another point, andelectrically operated means arranged to be moved from a normalstationary position to remove material from the container and deliver afresh supply thereto and to be set in operation by movement of saidswitch from its normal position and to be returned to its nor- .malposition when said switch has been returnedto normal position.

18. In a'cooking machine, a container for cooking liquid, an electricheater arranged to heat the liquid therein, a thermostat arranged to beinfluenced by the temperature of the liquid in the container, anelectric switch normally closing the circuit thru said heater andarranged to be opened by said thermostat when the temperature of theliquid is raised toa predetermined point, and to be closed again whenthe temperature thereof is reduced to another point, a normally inactiveelectric motor arranged to beset in operation by the opening of saidswitch, means arranged to be actuated by said motor to discharge cookedmaterial from the container and to deliver a fresh supply of materialthereto, means to break the motor circuit when the fresh supply ofmaterial has been delivered and means to return the motor actuated meansto its initial position when said switch is closed.

19. In a cooking machine, a container for cooking liquid, heating meanstherefor, a normally stationary electric motor having a switch forcontrolling the supply of current thereto, means arranged to be operatedby said motor when actuated to discharge cooked material from thecontainer and deliver a fresh supply there'- to according toapredetermined cycle, a thermostat arranged to be influenced by thetemperatureof said liquid to operate said switch to cause actuation ofsaid motor when the temperature of the liquid has been raised to apredetermined point, a normally closed secondary switch in said motorcircuit and means for moving the same to break said circuit when thefresh supply of material has been delivered, and means controlled bysaid thermostat to restore said secondary switch to its normal positionwhen the temperature of the liquid has been lowered.

GEORGE H. BUSHWAY.

